an adolescent with kleine-levin syndrome: a case report

kleine-levin syndrome is characterized as a periodic hypersomnia crisis as well as dietary and variable significant psychic symptoms. this report describes the finding on an evaluation of a 15- year- old girl with kls. she had amnesia to her episodes. all episodes were correlated with menstrual period.polysomnographic finding of this patient was normal with 5 sleep cycles in sleep architecture and sleep efficiency of 99%. decreasing in stage i, increasing of stage iii and iv and decreasing in rem sleep was notable. dextroamphetamin was given to the patient in order to decrease sleepiness.kleine-levin syndrome should be considered in patients with periodic hypersomnia.